What 2 ways can you register Sophos Firewall with Sophos Central? Username and Password OTP Certificate ACL

You can register Sophos Firewall with Sophos Central using the following two methods: 1. **Username and Password** - You can log in using your Sophos Central account by entering your username and password. 2. **OTP (One-Time Password)** - This method involves using a one-time password for additional security when registering the firewall with Sophos Central. The other options provided (Certificate and ACL) are not standard methods for registering Sophos Firewall with Sophos Central.